It is very OK to be able to adhere. Slightly dissatisfied with the adhesion strength with silicone sheet. Bubbles are taken in the part of the acrylic adhesive between the center PET film and the metal plate that adheres. Or bubbles are generated. It looks very bad. It does not seem to have much to do with working temperature. There is room for improvement in the physical property difference (compatibility) between the adhesive and the film? Please examine it.